Hello guys !
I used to read a great manga a few years ago. If i'm not mistaken you did the scans.
Poll: a young boys lives alone with his father who is 99% of the time. He knows how to take care of their home, and is good at cooking.
A friend of the father dies, and his 2 daughters enter the young boy's life. He fells in love with the older one.
This banner is made of one of the characters:
http://dynasty-scans.com/images/banners_dynasty/banner_0.png
Thanks for your help !